Who would issue the currency and regulate its quantity and quality if not a government or central bank? Such questions were unanswerable before the digital age, but since the Internet arrived, the vision of a democratic, safe and honest digital currency with no physical form, existing only in our computers and smartphones, independent of any central control, has been growing in progressive minds with an anti-authoritarian bent. The challenge has always been this: unlike a banana or a hundred-dollar note, which I cannot eat or spend twice, anything digital is just a string of numbers sitting on
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